Compound rail.



J. P. A. PEARSON.

comPoUNn RAIL.

APPLICATION FILED APB.Z4, 1913.

1,098,635, Patented June 2,1914

i l j MM QJ( ATTORNEY To o/ ttf/1on1V it muy concern.'

le it known that l, Jolis l. A. laaasos, a citizen of the United States, residing at San Francisco. in the. county of San Francisco aml State ot` California, have invented new aml useful Improvements in Compound Rails, of which the following is a speeitication.

My invention relates to improvements in railway rails.

(lne object of the invention is to provide. means for conntwting,Y two rails, the ends of which are adjacent. so that the rolling stock is not allowed to drop in passing from one rail to another. nor are the ends of said rail allowed to be depressed by the movenuuitl of the rolling stock thereover.

Another object is to dispense with the use of threaded bolts, screws, nuts, )lates and other devices of small size. whicli it is the present practice to use in railroad construction for holding the ends or parts of rails together. and which so easily rust, loosen, and break, thus requiring continuous repair, and necessitating a continuons cutting up and repairinof of streets and roadways.

Another o )ject is to provide a rail conlstruction which will not be injuriously atlected by the expansion and contraction due to changes of temperature or by the raisim.r and settlement. of the roadbed.

Another object of the. invention is to prevent spreading of the rails.

ln the accompanying drawing, Figure l is a lsectional perspective of my improved rail ltgs. f2. 3. 4. 5 uml t'i are similar views ot' portions thercot' detachet'l; Figs. 7. 8 and it are similar views of modifications ofthe rail.

lteferriug to the drawings, l. 2 indicate body sections. nml It. t cap sections of my improved rail. 'lhcl surfaces along which `said sections l and are in contact with one another have thel following form :--lroceed ing downward from the top along a surface t1 making.r a considerable angle with the vertical. then downward along.r a surface more u -arly vertical. then upwardly along a surface 8 parallel with the surface. t5. then downward alongr a surface t) parallel with the surface 7, then upward along a surface ll parallel with surfaces 6 and 8. Said .section 2 thus contains two portions Q0 and S35. all the outer surfaces of which slope. upwardly, so that the section 2 cannot be removed on the section 1 by a direct trans- Speoication of Letters Patent.

Application tiled April 24.1913. Serial No. 763.338.

UNITED STATES PATENT OFFICE.

JOHN P. A. PEARSON, 0F SAN FRANCISCO, CALIFORNIA.

COMPOUND RAIL.

Patented June 2, 1914.

verse horizontal movement, but must be. raised therefrom. The lower portion ot' section 2 is separated from section 1 by a key section 1Q, which is in contact with the section 2 along a surface 13 extending downwardly from the surface 11 and making an obtuse angle therewith, and along a surface 15 extending upwardly from the outer edge of the surface 13 and making an acute angle therewith. 'lhe key section 12 is in Contact; with the section l along a surface let extending downward from the surface 11 and parallel with the surface 9, then along a surface 1G extending from the lower edge of the surface. 1li and making therewith an angle. somewhat greater than the angle between the surfaces 9 and 11. then along a surfacey 17 parallel with the surface 13, and then along a surface 1S milking a very acute angle with the surface 17 and terminating in the horizontal bottom 1t) of the section 1. the key section l2 having also a horizontal bottom Q1. \Vhile. the section Q is in contact with the. key section. it does not rest thereon, but its weight is supported by means of lugs Q2, (Fie. 3) projecting downwardly from the sur ace 13 of the. section 2 and passing through slots 23. (Fig. 4) longer than the lugs 22, in the key section, the bottom of said lugs resting.r on the surface 1T of the section 1. rlhe object of this construction is to enable. the key section to be slid longitudinally Ain order to takel the rail Sections apart. la its normal position, the key seetion cannot be removed transversely from the rail because of the. portions of the. key section 12 and the body section 1. which coengage along the surface 1G. lint at suitable intervals said portions are cut away, as shown at- 2-1. (Figs. 2 and 4). so that when the key section is slid longitudinally unt-il the. cutI away portions of each section register with the portions not cut away of the, other section. then the key section can be moved in a direction transverse of the rail through a distance sutlicient. to permit the corner Q6 of the section 2. between the surfaces lti and 14. to clear a corner 27 between the surface. 14 aml the outer surface 28 of the key section 12. Then the. section 2 aml cap section 't are moved in a direction parallel with the surfaces (i, 8 and 11.

lVhen it is desired to remove the cap sections tt and -l from the sections l and 2 without separating said sections 'l and 2. this is effected in the following manner. The upper surfaces of the sections 1 and 2 are so shaped that, when in position, there is formed a dove-tailed or under-eut longitudinal groove Q9 in which the cap sections are held by a depending under-cut rib, of which one-half 3l is formed on the ca i section 3 and the other one-hall 32 upon tite cap section i. The one-half 3l of the rib is formed on its outer side with recessed portions 33 (Fig. :'i) and the corresponding side of the groove. is also formed with recessed portions Ii-t (Fig. 2 When the cap section B is slid longitudinally on the section 1, so that its eut-away or recessed portions register respectively with the portions not cut-away of the side of the groove, then the cap section 2i can be raised from ofl` the section 1. The cap sect-ion 4 can then he moved transversely in the direction of section l, and also raised from the section 1.

While I have. herein shown removable cap sections, yet in Figs. T and S I show them i'ormed in one piece with the respective sections l aml Q.

ln Fie'. T l have .shown a modification of the invention in which the key section 12 is omitted. The, body section 2 is then in contact with section l along a surface 3G extending from the surface 13 at an angle parallel with the surface 11. ln this ease. for holding said section 2 to the section 1, there are provided locking plates 3T having lips 2&8 which overhang the sections 1 and 2 adjacent to their line of juncture, said lips having depending longitudinal ribs :itl which enter grooves il 1n the section 2. At

suitable intervals said section 2 is formed with cut-away portions 4Q, which permit said ribs to pass transversely therethrough, when the locking plates are slid longitudinally on the sections 1 and 2. Said'plates can then be withdrawn transversely.

l claim:-

l. rail formed ot' sections, of which onel has a longitudinal ribbed portion both sides ot' which slope upwardly, and the other has a longitudinal recessed portion to receive the ribbed portion of the tirst-namcd section, aml removable means for preventing upward movement by which the ribbed portion can be removed from the recessed portion.

2. A rail comprising sections each formed of ribbed and recessed portions alternating longitudinally of the rail, the ribbed poi'- tions of the two sections preventing separation therefrom when engaging one another, said sections heilig separable when the ribbed portion of either section registers with the recessed portion of the other section.

3. A rail comprising body sections and a key section` one ot' said body sections having a longitudinal ribbed portion with upwardly extending sides, and the other body portion having a longitudinal recess to receive said ribbed portion, said key section having means engaging tl-ic first-naniet'l body section to prevent upward movement in the direction in which said ribbed portion can be raised Jfrom said recessed portion, and said lirst-named body section and the hey sect-ion having tro-engaging ribbed portions preventing said key section being moved transversely relative to said body section and recessed portions intervening between said ribbed portions permitting said transverse movement when registering with the ribbed portions of the body section.

l. A rail con'iprising body uml cap sections, the body having un niidereut. longitudinal groove, and the cap sections having longitudinal half ribs, which, when placed together. form a dove-tailed rib engaging Said undercut groove to prevent removal ol` the cap sections from the body.

5. A rail com rising body aml cap sections, the body iaving un undercut longitudinal groove, and the ca i sections having longitudinal half ribs, which, when placed together. form a dove-tailed rib engaging said undercut groove to prevent removal of the cap sections from the body, one ot' said cap sections and the body cach having alternate ribbed and recessed portions the ribbed portions of the cap section and the body engaging one another to prevent the removal of the cap section from the body. the cap section being slidable upon the bodv to permit its ribbed portions to register with the recessed portions of the hotly to remove the cap section.

In testimony whereof l have hereunto sel my hand in the presence of two subscribing witnesses.

Witnesses:

F. M. iVaioxrr, D. B. Ricuaans.

Oopiol ot this patent may be obtained for tiva conti elch, by addressing the "Commissioner of Patents, Washington, D. 0. 

